Frailty would affect 4 out of 5 people aged of 85 and over in France. As part of a global project aimed to develop a multimodal system for the early detection of frailty among older adults living at home or in a senior residence, we reported prospective quantitative study assessing a priori acceptability of this system. This platform is composed of 5 devices: a weight scale, a tensiometer, a wrist-worn step counter, an activity tracker and a tablet to exchange data with the aforementioned sensors over internet. The inclusion criteria are: age ≥ 80 years old, living at home or in senior residence, assessed as 'robust' or 'pre-frail'. The a priori acceptability is assessed through self-evaluation questionnaires. The results of the first 22 volunteers included in this study would be in favor of an a priori intention to use rather favorable to the use of the system, despite an a priori acceptability judged rather moderate.